示例

ecto 3.12.5: Compose dynamic filters, merge select projections, exclude AST clauses, reverse ordering, and attach CTEs and windows with Ecto.Query

已验证示例 — hex ecto 3.12.5: Compose dynamic filters, merge select projections, exclude AST clauses, reverse ordering, and attach CTEs and windows with…

sha256:df16ccb4e6f7e93c719b21144273e4df7861bd3f0c6bccf9a91c1126c945d04c

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声明的环境与签名的运行分开呈现，你可以看到这个样本究竟运行了什么、在哪里运行。

声明的环境 elixir linux x64 elixir elixir mix

环境	契约	阶段	运行日期
elixir 1 · linux alpine/x64 · docker ed25519:d91480838ac982c9	PASS	compile:PASS · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · hex@1	2026-08-17
elixir 1 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1	PASS	compile:PASS · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · hex@1	2026-08-18

HOW

目标: Compose dynamic filters, merge select projections, exclude AST clauses, reverse ordering, and attach CTEs and windows with Ecto.Query
包: ecto 3.12.5
符号: Ecto.Query.dynamic
Ecto.Query.select_merge
Ecto.Query.exclude
Ecto.Query.reverse_order
Ecto.Query.with_cte
Ecto.Query.windows
环境: elixir
创建时间: 2026-08-17T16:03:49Z

Ecto.Query.dynamic constructs composable boolean AST expressions that interpolate into query filter clauses and combine via boolean operators
select_merge statically combines map or struct projections into a unified select AST while wrapping unprojected queries in a merge expression
exclude strips individual AST clauses such as where, order_by, select, and join while preserving remaining query composition
reverse_order inverts ordering directions and null positioning on ordered queries and defaults to descending primary key order for unordered schema queries
with_cte and windows register Common Table Expression subqueries and window specifications into the query AST